9-47 An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process, air is at 95 kPa and 27°C. Accounting for the variation of specific heats with temperature, determine
a) the temperature after the heat-addition process,
b) the thermal efficiency, and
c) the mean effective pressure. Answers:
a) 1724.8 K,
b) 56.3 percent,
c) 675.9 kPa
 
 
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